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Malicious package

nx-appnpm

Advisory published Updated

nx-app is a confirmed malicious npm package (MAL-2026-15516) that executes malicious code on install (malicious version 9999.0.0-security-test). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in nx-app (npm)

MAL-2026-15516
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall nx-app

What this malware does

package.json declares its own name nx-app as a dependency whose value is a raw HTTPS URL (https://repo.securityctrl.com/nx-app) rather than a semver range against the npm registry. On npm install, npm fetches a tarball from that URL and runs any lifecycle scripts it contains, with no version pin, no integrity hash, and no signature check. Whoever controls repo.securityctrl.com controls code executed on the installer's machine at install time. The self-referential dependency key (matching the package's own name) is a dependency-confusion shape that forces resolution to the off-registry URL even when a registry-hosted nx-app exists, and the shipped in-tree source is an inert stub so the manifest URL is the sole payload delivery vector.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Malicious versions

1 flagged
9999.0.0-security-test

Indicators of compromise (SHA-256)

8671a9b563cebe9de36365a80edc1f242be492933cadb3e45ea590c8c5e1e115
6c7af1fac9e695388df59eb95fd3170fedc1b9ae8a282f9de84d5259aea78f82
19d229a8f8e02e22bb5ec2caf666e93ca98131c267d69c0fcec4f2ef4144a038

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for nx-app (version 9999.0.0-security-test).

  2. If you installed it — respond

    Remove nx-app from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If nx-app was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. nx-app on npm has been identified as a malicious package (version 9999.0.0-security-test flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-019067GHSA-vmrp-3pwx-mj42RLMA-2026-10767

References

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks nx-app-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Explore

nx-app (npm) malicious package — MAL-2026-15516 | O3 Security